Focal shift in focused truncated gaussian beams
Focal shift in focused truncated gaussian beams
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DOI：
10.1016/0030-4018(82)90128-6
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发表时间：
1982-07
影响因子：
2.4
通讯作者：
Yajun Li;E. Wolf
中科院分区：
文献类型：
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作者：
Yajun Li;E. Wolf
已知在某些情况下，聚焦的无像差波中的最大强度点不在几何焦点处，而是更靠近聚焦透镜。在本说明中，这样的焦移分析的情况下，高斯光束，由薄透镜，它填补了任何规定半径的圆孔聚焦，束腰的光束被假定为位于孔平面。许多以前已知的结果作为我们分析的限制情况。
It is known that under certain circumstances the point of maximum intensity in a focused aberration-free wave is not at the geometrical focus, but is closer to the focusing lens. In the present note such a focal shift is analyzed for the case of a gaussian beam, focused by a thin lens, which fills a circular aperture of any prescribed radius, the waist of the beam being assumed to be located in the aperture plane. Many previously known results follow as limiting cases of our analysis.